swimIsaac Marcuson
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 19.40 | 2024-11-02 | 2024 CO ACES High Point Invitevenue | |
| 50 Freestyle | SCY | 34.41 | BB+3.22s to A·+11.22s to Sectionals | 2026-01-25 | 2026 CO FAST Winter Openvenue |
| 100 Freestyle | SCY | 1:20.29 | B+1.00s to BB·+29.30s to Sectionals | 2026-03-07 | 2026 CO 14&U Silver Statevenue |
| 200 Freestyle | SCY | 2:54.67 | B+3.98s to BB·+62.88s to Sectionals | 2026-03-06 | 2026 CO 14&U Silver Statevenue |
| 25 Backstroke | SCY | 24.13 | 2024-11-02 | 2024 CO ACES High Point Invitevenue | |
| 50 Backstroke | SCY | 39.47 | BB+1.68s to A·+15.78s to Futures | 2026-03-07 | 2026 CO 14&U Silver Statevenue |
| 25 Breaststroke | SCY | 26.51 | 2024-11-23 | 2024 CO CUDA Pentathlon XXXVIIvenue | |
| 50 Breaststroke | SCY | 46.77 | BB+4.68s to A·+20.48s to Futures | 2026-03-06 | 2026 CO 14&U Silver Statevenue |
| 100 Breaststroke | SCY | 1:41.51 | BB+9.82s to A·+38.32s to Sectionals | 2026-03-08 | 2026 CO 14&U Silver Statevenue |
| 200 Breaststroke | SCY | 3:44.20 | +86.91s to Sectionals | 2026-01-25 | 2026 CO FAST Winter Openvenue |
| 25 Butterfly | SCY | 23.53 | 2024-11-03 | 2024 CO ACES High Point Invitevenue | |
| 50 Butterfly | SCY | 42.18 | B+0.89s to BB·+19.29s to Futures | 2026-03-08 | 2026 CO 14&U Silver Statevenue |
| 100 Butterfly | SCY | 1:42.45 | B+3.16s to BB·+47.26s to Sectionals | 2026-02-14 | 2026 CO NJ Groundhog Invitefast pool |
| 100 Individual Medley | SCY | 1:29.97 | B+0.18s to BB | 2026-03-06 | 2026 CO 14&U Silver Statevenue |
| 200 Individual Medley | SCY | 3:08.40 | BB+14.91s to A·+64.41s to Sectionals | 2026-02-13 | 2026 CO NJ Groundhog Invitefast pool |
| 50 Freestyle | LCM | 49.03 | +5.14s to B·+22.04s to Sectionals | 2025-04-27 | 2025 CO TOPS Arena Catch Me If You Canvenue |
| 100 Freestyle | LCM | 1:27.74 | BB+7.55s to A·+28.75s to Sectionals | 2026-07-26 | 2026 CO Age Group LCM State Championshipsfast pool |
| 200 Freestyle | LCM | 3:50.47 | +13.38s to B·+101.78s to Sectionals | 2025-04-27 | 2025 CO TOPS Arena Catch Me If You Canvenue |
| 50 Backstroke | LCM | 43.56 | BB+0.47s to A·+15.67s to Futures | 2026-07-26 | 2026 CO Age Group LCM State Championshipsfast pool |
| 100 Backstroke | LCM | 1:34.52 | BB+2.23s to A·+29.33s to Sectionals | 2026-07-25 | 2026 CO Age Group LCM State Championshipsfast pool |
| 50 Breaststroke | LCM | 52.35 | BB+4.46s to A·+21.46s to Futures | 2026-07-25 | 2026 CO Age Group LCM State Championshipsfast pool |
| 50 Butterfly | LCM | 45.94 | BB+5.35s to A·+19.65s to Futures | 2026-07-26 | 2026 CO Age Group LCM State Championshipsfast pool |
| 100 Butterfly | LCM | 1:44.74 | BB+8.45s to A·+41.65s to Sectionals | 2026-07-24 | 2026 CO Age Group LCM State Championshipsfast pool |
| 200 Individual Medley | LCM | 3:30.54 | BB+12.25s to A·+65.85s to Sectionals | 2026-07-24 | 2026 CO Age Group LCM State Championshipsfast pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 10.
National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.
Pool tags are a venue speed heuristic (median deviation of all swims there vs each swimmer's typical time) — see the venue page for the method.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 35.51 | flying | 200 Free Relay (leg 2) | 2026-03-01 | 2026 CO CSI SC Age Group Championships |
| 50 Freestyle | SCY | 35.54 | flying | 200 Medley Relay (leg 4) | 2026-02-28 | 2026 CO CSI SC Age Group Championships |
| 50 Freestyle | LCM | 36.71 | flat | 200 Free Relay | 2026-07-26 | 2026 CO Age Group LCM State Championships |
| 50 Freestyle | LCM | 41.07 | flying | 200 Free Relay (leg 3) | 2025-07-27 | 2025 CO CSI Age Group Championships |
| 50 Backstroke | LCM | 44.09 | flat | 200 Medley Relay | 2026-07-25 | 2026 CO Age Group LCM State Championships |
| 50 Butterfly | LCM | 1:00.29 | flying | 200 Medley Relay (leg 3) | 2025-07-26 | 2025 CO CSI Age Group Championships |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
IMX / IMR
IMX 10 & under · LCM
1876 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 3:50.47 | 285 |
| 100 BK LCM | 1:34.52 | 606 |
| 100 FL LCM | 1:44.74 | 438 |
| 200 IM LCM | 3:30.54 | 547 |
| 100 BR LCM | — | 0 |
IMR 10 & under · LCM
2589 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 100 FR LCM | 1:27.74 | 503 |
| 50 BK LCM | 43.56 | 612 |
| 50 BR LCM | 52.35 | 497 |
| 50 FL LCM | 45.94 | 430 |
| 200 IM LCM | 3:30.54 | 547 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:20.29
Front half 38.92s · back half 41.37s
200 Freestyle SCY 2:54.67
Front half 82.60s · back half 92.07s
100 Breaststroke SCY 1:41.51
Front half 48.38s · back half 53.13s
200 Breaststroke SCY 3:44.20
Front half 107.60s · back half 116.60s
100 Butterfly SCY 1:42.45
Front half 44.51s · back half 57.94s
100 Individual Medley SCY 1:29.97
Front half 43.19s · back half 46.78s
100 Freestyle LCM 1:27.74
Front half 41.70s · back half 46.04s
200 Freestyle LCM 3:50.47
Front half 108.67s · back half 121.80s
100 Backstroke LCM 1:34.52
Front half 45.13s · back half 49.39s
100 Butterfly LCM 1:44.74
Front half 46.17s · back half 58.57s
200 Individual Medley LCM 3:30.54
Front half 99.04s · back half 111.50s
Reaction time
From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.
Swim history
Every recorded swim, newest first
| Date | Event | Course | Time | Age | Round | Meet |
|---|
Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.
Progression
Faster times are higher. One card per event, all courses & history.